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Red Hat Enterprise Linux 8 RHSA-2021-1783-01 Moderate Tigervnc Fix

red hat
Calendar Grey May 18, 2021
Dist Redhat Esm H88
Debian issues a significant security notice for openssh featuring urgent patches and improvements for Debian 11.
An update for tigervnc is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.
The following packages have been upgraded to a later upstream version: tigervnc (1.11.0). (BZ#1880985)
Security Fix(es):
* tigervnc: certificate exceptions stored as authorities (CVE-2020-26117)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate red hat security fix tigervnc

References

https://access.redhat.com/security/cve/CVE-2020-26117 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: tigervnc-1.11.0-6.el8.src.rpm
aarch64: tigervnc-1.11.0-6.el8.aarch64.rpm tigervnc-debuginfo-1.11.0-6.el8.aarch64.rpm tigervnc-debugsource-1.11.0-6.el8.aarch64.rpm tigervnc-server-1.11.0-6.el8.aarch64.rpm tigervnc-server-debuginfo-1.11.0-6.el8.aarch64.rpm tigervnc-server-minimal-1.11.0-6.el8.aarch64.rpm tigervnc-server-minimal-debuginfo-1.11.0-6.el8.aarch64.rpm tigervnc-server-module-1.11.0-6.el8.aarch64.rpm tigervnc-server-module-debuginfo-1.11.0-6.el8.aarch64.rpm
noarch: tigervnc-icons-1.11.0-6.el8.noarch.rpm tigervnc-license-1.11.0-6.el8.noarch.rpm tigervnc-selinux-1.11.0-6.el8.noarch.rpm
ppc64le: tigervnc-1.11.0-6.el8.ppc64le.rpm tigervnc-debuginfo-1.11.0-6.el8.ppc64le.rpm tigervnc-debugsource-1.11.0-6.el8.ppc64le.rpm tigervnc-server-1.11.0-6.el8.ppc64le.rpm tigervnc-server-debuginfo-1.11.0-6.el8.ppc64le.rpm tigervnc-server-minimal-1.11.0-6.el8.ppc64le.rpm tigervnc-server-minimal-debuginfo-1.11.0-6.el8.ppc64le.rpm tigervnc-server-module-1.11.0-6.el8.ppc64le.rpm tigervnc-server-module-debuginfo-1.11.0-6.el8.ppc64le.rpm
s390x: tigervnc-1.11.0-6.el8.s390x.rpm tigervnc-debuginfo-1.11.0-6.el8.s390x.rpm tigervnc-debugsource-1.11.0-6.el8.s390x.rpm tigervnc-server-1.11.0-6.el8.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:1783-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1783
Issue date: 2021-05-18

Topic

An update for tigervnc is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate red hat security fix tigervnc

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1841537 - StandardError doesn't work with Xvnc as socket activated service

1853608 - Fail to start tigervnc server

1880985 - Rebase tigervnc to 1.11.0

1882841 - CVE-2020-26117 tigervnc: certificate exceptions stored as authorities

1883415 - Tigervnc cannot use boolean values in config files

1897498 - Starting the xvnc service starts a vncsession process and goes into zombie state

1897504 - Add vncserver wrapper script again to allow non-root users to start and stop the service

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